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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Sales Representative	Paul Henriot	Austria	1 2 3 4 5
2	Sales Manager	Patricio Simpson	Bulgaria	1 2 3 4 5
3	Sales Associate	Georg Pipps	Germany	1 2 3 4 5
4	Sales Consultant	Matti Karttunen	England	1 2 3 4 5
5	Sales Representative	Jaime Yorres	England	1 2 3 4 5
6	Sales Associate	Pascale Cartrain	USA	1 2 3 4 5
7	Sales Agent	Elizabeth Lincoln	Spain	1 2 3 4 5
8	Sales Agent	Matti Karttunen	Argentina	1 2 3 4 5
9	Marketing Assistant	Hanna Moos	USA	1 2 3 4 5
10	Owner	Antonio Moreno	Austria	1 2 3 4 5
11	Sales Manager	Matti Karttunen	Spain	1 2 3 4 5
12	Sales Manager	Paul Henriot	USA	1 2 3 4 5
13	Sales Representative	Howard Snyder	England	1 2 3 4 5
14	Accountant	Pascale Cartrain	USA	1 2 3 4 5
15	Accounting Manager	Paul Henriot	Austria	1 2 3 4 5
16	Sales Agent	Jaime Yorres	USA	1 2 3 4 5
17	Sales Manager	Hanna Moos	Germany	1 2 3 4 5
18	Sales Consultant	Paul Henriot	USA	1 2 3 4 5
19	Sales Manager	Hanna Moos	Bulgaria	1 2 3 4 5
20	Sales Representative	Antonio Moreno	Austria	1 2 3 4 5
21	Marketing Assistant	Elizabeth Lincoln	Argentina	1 2 3 4 5
22	Marketing Assistant	Pascale Cartrain	Italy	1 2 3 4 5
23	Accountant	Matti Karttunen	Argentina	1 2 3 4 5
24	Owner	Hanna Moos	Brazil	1 2 3 4 5
25	Owner	Pascale Cartrain	Germany	1 2 3 4 5
26	Marketing Manager	Howard Snyder	Spain	1 2 3 4 5
27	Sales Representative	Georg Pipps	France	1 2 3 4 5
28	Sales Associate	Jaime Yorres	Germany	1 2 3 4 5
29	Sales Representative	Jaime Yorres	Austria	1 2 3 4 5
30	Owner	Elizabeth Lincoln	Argentina	1 2 3 4 5
31	Sales Consultant	Georg Pipps	England	1 2 3 4 5
32	Sales Manager	Jaime Yorres	Argentina	1 2 3 4 5
33	Sales Representative	Paul Henriot	France	1 2 3 4 5
34	Sales Representative	Antonio Moreno	Austria	1 2 3 4 5
35	Accounting Manager	Georg Pipps	Italy	1 2 3 4 5
36	Marketing Manager	Howard Snyder	Spain	1 2 3 4 5
37	Sales Consultant	Pascale Cartrain	France	1 2 3 4 5
38	Accountant	Howard Snyder	Germany	1 2 3 4 5
39	Sales Manager	Matti Karttunen	Bulgaria	1 2 3 4 5
40	Owner	Howard Snyder	Argentina	1 2 3 4 5
41	Marketing Assistant	Pascale Cartrain	Bulgaria	1 2 3 4 5
42	Accounting Manager	Georg Pipps	England	1 2 3 4 5
43	Sales Representative	Antonio Moreno	England	1 2 3 4 5
44	Marketing Manager	Paul Henriot	Argentina	1 2 3 4 5
45	Owner	Patricio Simpson	Italy	1 2 3 4 5
46	Sales Associate	Howard Snyder	Brazil	1 2 3 4 5
47	Sales Agent	Georg Pipps	Argentina	1 2 3 4 5
48	Accountant	Paul Henriot	Spain	1 2 3 4 5
49	Sales Agent	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
50	Sales Associate	Jaime Yorres	Bulgaria	1 2 3 4 5
51	Accounting Manager	Paul Henriot	Austria	1 2 3 4 5
52	Sales Manager	Pascale Cartrain	Argentina	1 2 3 4 5
53	Owner	Elizabeth Lincoln	Germany	1 2 3 4 5
54	Marketing Assistant	Jaime Yorres	Argentina	1 2 3 4 5
55	Accounting Manager	Howard Snyder	Italy	1 2 3 4 5
56	Accountant	Georg Pipps	Bulgaria	1 2 3 4 5
57	Accountant	Hanna Moos	France	1 2 3 4 5
58	Marketing Assistant	Patricio Simpson	France	1 2 3 4 5
59	Sales Consultant	Elizabeth Lincoln	England	1 2 3 4 5
60	Owner	Jaime Yorres	Bulgaria	1 2 3 4 5
61	Owner	Pascale Cartrain	Italy	1 2 3 4 5
62	Marketing Manager	Hanna Moos	Bulgaria	1 2 3 4 5
63	Marketing Manager	Pascale Cartrain	Italy	1 2 3 4 5
64	Sales Manager	Georg Pipps	Bulgaria	1 2 3 4 5
65	Sales Representative	Elizabeth Lincoln	England	1 2 3 4 5
66	Accounting Manager	Patricio Simpson	Bulgaria	1 2 3 4 5
67	Sales Consultant	Jaime Yorres	Argentina	1 2 3 4 5
68	Sales Representative	Georg Pipps	USA	1 2 3 4 5
69	Marketing Assistant	Howard Snyder	USA	1 2 3 4 5
70	Owner	Howard Snyder	Brazil	1 2 3 4 5
71	Sales Associate	Antonio Moreno	Italy	1 2 3 4 5
72	Sales Manager	Patricio Simpson	England	1 2 3 4 5
73	Accountant	Paul Henriot	Austria	1 2 3 4 5
74	Accountant	Pascale Cartrain	USA	1 2 3 4 5
75	Sales Associate	Patricio Simpson	Bulgaria	1 2 3 4 5
76	Sales Consultant	Hanna Moos	France	1 2 3 4 5
77	Sales Associate	Georg Pipps	Argentina	1 2 3 4 5
78	Sales Associate	Pascale Cartrain	USA	1 2 3 4 5
79	Sales Consultant	Patricio Simpson	Spain	1 2 3 4 5
80	Sales Associate	Matti Karttunen	Austria	1 2 3 4 5
81	Accounting Manager	Jaime Yorres	Argentina	1 2 3 4 5
82	Sales Manager	Elizabeth Lincoln	Argentina	1 2 3 4 5
83	Sales Manager	Patricio Simpson	Italy	1 2 3 4 5
84	Sales Representative	Antonio Moreno	USA	1 2 3 4 5
85	Owner	Hanna Moos	Bulgaria	1 2 3 4 5
86	Sales Associate	Jaime Yorres	Spain	1 2 3 4 5
87	Sales Manager	Hanna Moos	Austria	1 2 3 4 5
88	Owner	Elizabeth Lincoln	France	1 2 3 4 5
89	Sales Manager	Antonio Moreno	Germany	1 2 3 4 5
90	Sales Manager	Paul Henriot	Germany	1 2 3 4 5
91	Sales Representative	Georg Pipps	England	1 2 3 4 5
92	Sales Representative	Elizabeth Lincoln	Austria	1 2 3 4 5
93	Marketing Manager	Elizabeth Lincoln	France	1 2 3 4 5
94	Sales Manager	Matti Karttunen	Brazil	1 2 3 4 5
95	Sales Representative	Antonio Moreno	Argentina	1 2 3 4 5
96	Marketing Assistant	Pascale Cartrain	Austria	1 2 3 4 5
97	Accounting Manager	Hanna Moos	Germany	1 2 3 4 5
98	Sales Agent	Howard Snyder	Spain	1 2 3 4 5
99	Sales Agent	Elizabeth Lincoln	USA	1 2 3 4 5
100	Sales Agent	Elizabeth Lincoln	England	1 2 3 4 5


...181 182 183 184 185 186 187 188 189 190 ... Item 181001 to 182000 of 300000 Page: of 300 GoPage size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="c#" CodeFile="DefaultCS.aspx.cs" Inherits="Telerik.GridExamplesCSharp.Performance.Virtualization.DefaultCS" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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